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<div id="winchm_template_top">
	<div id="winchm_template_button"><A href="debug_typeopts_xxx.htm" title="Previous topic"><img id="winchm_template_prev" alt="Previous topic" src="../template2/btn_prev_n.gif" border="0"></a><A href="ext_tdop.htm" title="Next topic"><img id="winchm_template_next" alt="Next topic" src="../template2/btn_next_n.gif" border="0"></a></div>
	<div id="winchm_template_navigation">Help &gt; 
<A href="introduction6.htm">Debugging Tools for Windows (WinDbg, KD, CDB, NTSD)</A> &gt; <A href="debugging_resources.htm">Debugging Resources</A> &gt; <A href="debugger_engine_and_extension_apis.htm">Debugger Engine and Extension APIs</A> &gt; <A href="using_the_debugger_engine_api.htm">Using the Debugger Engine API</A> &gt; <A href="debugger_engine_reference.htm">Debugger Engine Reference</A> &gt; <A href="structures_and_constants.htm">Structures and Constants</A> &gt; </div>
	<div id="winchm_template_title">DEBUG_VALUE</div>
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	<div id="winchm_template_content"><div id="mainSection"><p>The DEBUG_VALUE structure holds register and expression values.</p>
<h2>Syntax</h2>
<div class="code"><span codelanguage="ManagedCPlusPlus"><table>
<tr>
<th>C++</th>
</tr>
<tr>
<td>
<pre>typedef struct _DEBUG_VALUE {
  union {
    UCHAR   I8;
    USHORT  I16;
    ULONG   I32;
    struct {
      ULONG64 I64;
      BOOL    Nat;
    };
    float   F32;
    double  F64;
    UCHAR   F80Bytes[10];
    UCHAR   F82Bytes[11];
    UCHAR   F128Bytes[16];
    UCHAR   VI8[16];
    USHORT  VI16[8];
    ULONG   VI32[4];
    ULONG64 VI64[2];
    float   VF32[4];
    double  VF64[2];
    struct {
      ULONG LowPart;
      ULONG HighPart;
    } I64Parts32;
    struct {
      ULONG64 LowPart;
      LONG64  HighPart;
    } F128Parts64;
    UCHAR   RawBytes[24];
  };
  ULONG TailOfRawBytes;
  ULONG Type;
}  DEBUG_VALUE, *PDEBUG_VALUE;</pre>
</td>
</tr>
</table></span></div>
<h2>Members</h2>
<dl>
<dt>( <i>unnamed union</i> )</dt>
<dd>
<p> </p>
<dl>
<dt><b>I8</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>I16</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>I32</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt>( <i>unnamed struct</i> )</dt>
<dd>
<p> </p>
<dl>
<dt><b>I64</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>Nat</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
</dl>
</dd>
<dt><b>F32</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>F64</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>F80Bytes</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>F82Bytes</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>F128Bytes</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>VI8</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>VI16</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>VI32</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>VI64</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>VF32</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>VF64</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>I64Parts32</b></dt>
<dd>
<p>See Remarks.</p>
<dl>
<dt><b>LowPart</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>HighPart</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
</dl>
</dd>
<dt><b>F128Parts64</b></dt>
<dd>
<p>See Remarks.</p>
<dl>
<dt><b>LowPart</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>HighPart</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
</dl>
</dd>
<dt><b>RawBytes</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
</dl>
</dd>
<dt><b>TailOfRawBytes</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
<dt><b>Type</b></dt>
<dd>
<p>See Remarks.</p>
</dd>
</dl>
<h2>Remarks</h2>
<p>The <b>Type</b> field specifies the value type that is being held by the structure. This also specifies which field in the structure is valid. The possible values of the <b>Type</b> field, and the corresponding field specified as valid in the structure, include the following.</p>
<table>
<tr>
<th>Type Name</th>
<th>Type</th>
<th>Valid DEBUG_VALUE Field</th>
</tr>
<tr>
<td>DEBUG_VALUE_INT8</td>
<td>8-bit signed integer</td>
<td><b>I8</b></td>
</tr>
<tr>
<td>DEBUG_VALUE_INT16</td>
<td>16-bit signed integer</td>
<td><b>I16</b></td>
</tr>
<tr>
<td>DEBUG_VALUE_INT32</td>
<td>32-bit signed integer</td>
<td><b>I32</b></td>
</tr>
<tr>
<td>DEBUG_VALUE_INT64</td>
<td>64-bit signed integer</td>
<td><b>I64</b></td>
</tr>
<tr>
<td>DEBUG_VALUE_FLOAT32</td>
<td>32-bit floating point number</td>
<td><b>F32</b></td>
</tr>
<tr>
<td>DEBUG_VALUE_FLOAT64</td>
<td>64-bit floating point number</td>
<td><b>F64</b></td>
</tr>
<tr>
<td>DEBUG_VALUE_FLOAT80</td>
<td>80-bit floating point number</td>
<td><b>F80Bytes</b></td>
</tr>
<tr>
<td>DEBUG_VALUE_FLOAT128</td>
<td>128-bit floating point number</td>
<td><b>F128Bytes</b></td>
</tr>
<tr>
<td>DEBUG_VALUE_VECTOR64</td>
<td>64-bit vector</td>
<td><b>VI8[8]</b>, <b>VI16[4]</b>, <b>VI32[2]</b>, <b>VI64[1]</b>, <b>VF32[2]</b>, <b>VF64[1]</b></td>
</tr>
<tr>
<td>DEBUG_VALUE_VECTOR128</td>
<td>128-bit vector</td>
<td><b>VI8[16]</b>, <b>VI16[8]</b>, <b>VI32[4]</b>, <b>VI64[2]</b>, <b>VF32[4]</b>, <b>VF64[2]</b></td>
</tr>
</table>
<p> </p>
<h2>Requirements</h2>
<table>
<tr>
<th width="30%">
<p>Header</p>
</th>
<td width="70%">
<dl>
<dt>DbgEng.h (include DbgEng.h)</dt></dl></td></tr></table></div></div>	
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